Joint structure and building

Abstract

The present invention addresses the problem of providing a joint structure which comprises a joint member suitable for a butterfly joint, and a building. The joint structure according to the present invention includes a first wood panel, a second wood panel, and a butterfly wedge-shaped joint member for joining the first wood panel and the second wood panel. The joint structure has an allowable yield strength of about 10 kN or more. In one embodiment, the ratio of the bending strength of the wood panels to the bending strength of the joint member in the joint structure is 1:2.2 to 1:3.6. In addition, the joint structure according to the present invention may further include a joint member comprising laminated wood in which a plurality of plate materials are laminated.

The invention claimed is: 
     
       1. A joint structure comprising a first wooden panel, a second wooden panel, and a butterfly joint member for joining the first wooden panel and the second wooden panel,
 wherein the joint structure has an allowable bearing capacity of about 10 kN or greater, 
 wherein the joint member comprises engineered wood prepared from laminating a plurality of board members, 
 wherein the plurality of board members comprise a first board member having a first fiber orientation and a second board member having a second fiber orientation which is different from the first fiber orientation, 
 a total volume of the first board member is greater than a total volume of the second board member, and 
 a height direction of the joint member is substantially identical to the first fiber orientation. 
 
     
     
       2. The joint structure of  claim 1 , wherein the joint member has a rounded corner section. 
     
     
       3. The joint structure of  claim 2 , wherein a radius of the rounded corner section is 6 to 15 mm. 
     
     
       4. The joint structure of  claim 1 , wherein
 a dovetail groove is formed at each of a predetermined position on a joint section of the first wooden panel and a predetermined position on a joint section of the second wooden panel, 
 a cross-sectionally dovetail shaped space corresponding to a shape of the joint member is formed by matching a position of a dovetail groove of the first wooden panel and a position of a dovetail groove of the second wooden panel, and 
 the first wooden panel and the second wooden panel are configured to be joined with each other by inserting the joint member into the cross-sectionally dovetail shaped space. 
 
     
     
       5. The joint structure of  claim 1 , wherein the joint structure does not comprise a metal part for joining the first wooden panel and the second wooden panel. 
     
     
       6. The joint structure of  claim 1 , wherein the first wooden panel and the second wooden panel are fabricated with a cross laminated timber. 
     
     
       7. The joint structure of  claim 1 , wherein lengths of the first wooden panel and the second wooden panel in a width direction are each about 300 mm to about 800 mm. 
     
     
       8. The joint structure of  claim 1 , wherein a size of the joint member has a length in a height direction of about 150 mm to about 270 mm, a length in a width direction of about 150 mm to about 270 mm, a thickness of about 90 mm to about 270 mm, and a shortest length between side surfaces of about 75 mm to about 135 mm. 
     
     
       9. The joint structure of  claim 1 , wherein flexural strength of the wooden panels: flexural strength of the joint member is 1:2.2 to 1:3.6. 
     
     
       10. The joint structure of  claim 1 , wherein the joint structure has an ultimate bearing capacity of about 18 kN or greater. 
     
     
       11. A building comprising the joint structure of  claim 1 . 
     
     
       12. A joint member used in the joint structure of  claim 1 . 
     
     
       13. A joint structure comprising a first wooden panel, a second wooden panel, and a butterfly joint member for joining the first wooden panel and the second wooden panel,
 wherein the joint structure has an allowable bearing capacity of about 10 kN or greater, 
 wherein the joint member comprises engineered wood prepared from laminating a plurality of board members, 
 wherein the plurality of board members comprise only a plurality of first board members having a first fiber orientation, and 
 a height direction of the joint member is substantially identical to the first fiber orientation. 
 
     
     
       14. The joint structure of  claim 13 , wherein the joint member has a structure prepared from laminating the plurality of first board members such that a strength of the plurality of first board members is symmetric with respect to a central axis in the height direction of the joint member.